Streamit s audio streaming solutions for dummies

Transcription

1 Streamit s audio streaming solutions for dummies A professional user s perspective. By Wim van Dijk ========================================== If you are used to traditional ways of listening to (or distributing) background music 1 via satellite or from a CD or by using a music computer it is not always obvious to look into other ways of doing this. It is also not very easy to imagine if the underlying technology totally differs from the methods that you are used to. This is the reason why breakthrough innovation often comes from outsiders and not from the market leaders. Streamit wants to make its solutions understandable. Starting point for our development is always the question: what does our customer need? This document is therefore written from a users perspective, using plain language with specific application situations as a reference. A new way of music distribution Distribution (streaming) of audio over data networks today makes sense as it eliminates many of the disadvantages that traditional methods have (i.e. CD distribution, satellite distribution, illegal downloaded content, standard FM radio). It makes full use of the increasing availability of broadband connections in many countries across the globe. Especially for retail chains streaming audio is a tool they have been waiting for. The Streamit mission is to develop and deliver a standard audio distribution over IP solution that is very easy to use, extremely reliable, stable and secure. The goal of this document is to describe from a users perspective the application possibilities of the Streamit solution. In addition it deals with some of the primary reactions from IT staff when they are confronted with this type of network use. The Streamit Solution has three major components: 1. The SIR Series professional Internet radios, a family of devices that are needed to translate audio over the Internet into a signal that can be played by normal amplifier or stereo set. 1 Background music, mood music or branded music helps to create the right atmosphere in your location. Contrary to so called foreground music the need to influence the choice of the next track being played is minimal. You need no fancy music computer for background music but a simple turn-it-on-and-play device. 2008, Streamit BV W: T: E: info@streamit.eu p. 1/10

2 2. The Streamit Audio Distribution Platform (ADP) that fulfills a central role in the solution and connects the SIR devices to the right stream or Internet radio station. An Internet radio station could also be the branded music channel from a background music provider. 3. Channelservice.fm is a free web based service from Streamit that helps to find, select and program favorite Internet stations or branded music channels into a Streamit SIR device The SIR Internet radio is of course the essential ingredient in every streaming solution powered by Streamit. The Streamit ADP and Channelservice.fm are additional components that could speed up the streaming go-to-market strategy of a professional background music provider or make live more easily for an individual shop manager. The Streamit Solution covers more then just basic streaming and offers a unique set of special features: 1. Encryption. Content is valuable and needs to be protected against unauthorized use. The SIR Internet radios together with Streamit ADP offer this important feature. The stream can be encrypted when Streamit ADP is being used. To encrypt tracks on the SD memory card a special Streamit add-on program, Streamit track encryptor, needs to be used. 2. Commercials. Streamit ADP is able to schedule commercials into the audiostream. These commercials can be targeted at specific locations. 3. Remote configuration. Installation and management of a streaming device should be reduced to a minimum effort. The SIR Internet radios can be configured remotely with Streamit ADP or modified third-party systems. 4. Store & Forward and/or fall back. All Streamit SIR Internet radios have a slot for a SD/SDHC memory card (up to 32 GB) to play audio content locally in case the network connection is lost. Except for the SIR80 all SIR Internet radios can also operate as Store & Forward devices. This means that they can download and store audio tracks (music and commercials) on the memory card during the night or the weekend and play during opening hours completely independent from the network and Internet connection. 2008, Streamit BV W: T: E: info@streamit.eu p. 2/10

3 Figure 1 - Store & Forward mode 5. Job scheduler. The SIR Internet radios except for the SIR80 have an internal clock. With a job schedule that can be downloaded remotely into the SIR memory the device can perform independently a whole list of instructions on a predefined moment. 6. Reliability, security and protection. The SIR Internet radios are very reliable and stable. The devices cannot be accessed via the network. Content updates and new firmware upgrades are triggered by the device itself. Unfamiliar content cannot be stored. Local access to the device can be protected with a PIN code. An authentication process is in place, so that only authorized devices get your content. The SIR devices can be protected against unauthorized use. Examples of practical situations, which are described on the following pages: 1. Restaurant or shop owner (1) 2. Restaurant or shop owner (2) 3. Retail chain, hotel, retirement home etc. 4. Background music provider or network operator 5. Background music provider 6. Radio broadcasting; news agency 7. A/V installer 2008, Streamit BV W: T: E: info@streamit.eu p. 3/10

4 Scenario 1: Restaurant or shop owner User requirements: 1. I want to listen to Internet radio stations in my shop or restaurant and do no want to switch on my PC, or 2. I just want to listen to background music, but I do not want to buy a music computer that is loaded with stuff I do not use. In this situation you just needs one of the SIR Internet radios. a free webbased service from Streamit (registration required) will help you to select your favorite Internet radio stations and configure your SIR Internet radio device. In case of network problems, you can put some music on the SD card so that you have guaranteed always music in your venue. Figure 2 - Basic configuration scheme Scenario 2: Restaurant or shop owner User requirement: I want to listen to a paid radio station or to my own program with SIR authentication as I run my own audio distribution 2 server. In this situation you just needs one of the SIR Internet radios. a free webbased service from Streamit (registration 2 For example Shoutcast or Icecast. 2008, Streamit BV W: T: E: info@streamit.eu p. 4/10

5 required) will help you to connect your audio distribution server to your SIR Internet radio device(s). In case of network problems, you can put some music on the SD card so that you have guaranteed always music in your venue. Figure 3 - Scheme with third party streaming server Scenario 3: Retail chain, hotel, retirement home, etc. User requirement: I need my own complete audio distribution system in my network. Streamit ADP and the SIR Internet radios will do the trick. In your own data centre we will install an out-of-the-box audio distribution platform. Streamit ADP is tuned right from the start and operates as your control centre for all the SIR devices you have connected to your network in your organization. Firmware updates, new stations or channels, grouping different SIR Internet radios, you control it via the Streamit ADP web interface. Streamit ADP is modular and you can tie it to your exact needs. Streamit Terminal Program (STP) is required to do the initial configuration of your SIR devices before they are shipped to the play out locations. 2008, Streamit BV W: T: E: info@streamit.eu p. 5/10

6 Figure 4 Inside secure company network Scenario 4: Background music provider or network operator. User Requirements: 1. I want to set up my own music distribution service and infrastructure and 2. It should be completely reliable and secure and should support copy protection. Streamit ADP is ideal to set up your own music distribution service. This platform has several modules that give you the functionality you need. It can be used as a platform to manage access of all your Streamit devices and simply assign external streams not generated by Streamit ADP or use it as an advanced solution handling your commercial scheduling, stream generation, stream and/or file encryption and Store and Forward management. The PC-software Streamit Terminal Program (STP) is required to do the initial configuration of your SIR devices before you ship them to your playout locations. With STP you can generate your own encryption key, which is used to encrypt the audio content on the SD memory cards of your SIR devices 3. The SIR Internet radios can operate in streaming mode or in store & forward mode. Encryption can either be applied to the stream or to the files that are stored on the local SD memory card of the SIR. Streamit ADP can easily be positioned inside a secured network (Virtual Private Network or Private Network). Music, commercials and play list updates are performed through a single VPN tunnel to the Streamit ADP server. The SIR devices can handle Dynamic (DHCP) and Static IP addresses. In case of a proxy server, the SIR can be instructed to take that into account as well. Figure 5 - Encrypted content setup 3 Only SIR 100, 120 and 120PRO can handle encrypted content (bother streaming and local file playback. 2008, Streamit BV W: T: E: info@streamit.eu p. 6/10

7 Scenario 5: Background music provider User requirement: We are developing our own streaming service, but we find your SIR internet radio very interesting. The SIR Internet radios are easy to integrate with in-house developed or third-part music distribution platforms. We have done this several times. It is Streamit second nature to not just supply a box but to share know how as well. We supply extensive technical documentation and can also deliver consultancy services to help you set up your own system or service. Scenario 6: Radio broadcasting; news agency User requirement: 1. We are a radio broadcasting station and we want to send/stream our program to our transmission park and replace expensive leased lines. On the receiving end we need a reliable and stable hardware solution as a PC based solution gave us too many problems. 2. We constantly monitor a number of Internet radio stations. We need reliable hardware with XLR support to record these streams for later access by our news redaction. The SIR Internet radios can be used in both cases. The difference is that in the first case you will need to set up your own stream. The SIR is programmed with the IP address of your streaming server and will pass the signal on to your transmission equipment. Just for the record: our Audio Distribution Platform could very well serve as your stream server. Figure 6-2 SIRs fit perfectly in 1HE 19" rack The SIR can also be used to monitor specific Internet radio stations constantly and pass the signal to a server that records these streams for later use. The SIR Internet radios are very reliable and need no further maintenance once the right streams are preset into the device. As the SIR is rack mountable (2 SIR in one HE) you can easy install them in one 2008, Streamit BV W: T: E: info@streamit.eu p. 7/10

8 single 19 server rack. Use to configure them to the Internet radio stations of your choice. Figure 7 - Monitoring of internet radio streams Scenario 7: A/V installer User requirement: I get more and more questions from my customers about Internet radio. This is new to me because so far normal amplifiers, tuners and CD players were all my customers needed. I want a professional device, which is reliable and stable and gives a good audio quality. The Streamit SIR Internet radios are the type of device that you are looking for. They are especially designed for professional use. A SIR is connected to a standard amplifier using RCA or XLR connections. Furthermore it is connected to a network or ADSL modem with Internet access. Your customer does not need to keep a PC running as the SIR works completely independent. Internet radio stations can be selected on a free Internet radio control and management service by Streamit. As far as we know the SIR120Pro is the only Internet radio with XLR connectors! The audio quality depends also on various other factors (bitrate and compression code used). Streamit devices can handle a variety of variables to optimize the audio output. You do not need any special training to work with the Streamit devices but in case of questions or specific customer requirements our support desk or your designated distributor will help you deal with it. Music over data networks? Are you insane? Unfortunately this is how some network people react when you approach them with the idea to stream music or video over the company data network. This is understandable when available bandwidth is limited (and very expensive) and already completely occupied by other applications such as administration systems, cash and payment systems. It might also 2008, Streamit BV W: T: E: info@streamit.eu p. 8/10

9 be that the IT department is understaffed. The last thing that a network engineer wants to deal with, are shop assistants complaining about the music! Facts are that data networks are the electronic highways for a lot of applications in the very near future. Video surveillance, Electronic payments, telephony, digital signage and of course background music are just a few of those. So if the network is not ready to support these today, it will have to very soon. The most important things a network engineer requires from a networked device are: stability, reliability and zero-maintenance. Streamit understands this and makes sure that the Streamit solutions live up to this requirement. The SIR Internet radios can be configured without a PC or installing special software. They can get a dynamic network address (IP address) or a static one. Audio streams are received via http and this only requires port 80 to be open on the firewall. This is the same port you need for normal Internet browsing. If you have access to Internet from your desktop, it is very likely that the SIR Internet radio can play your music. The bandwidth it consumes depends on the bitrate of the stream. The SIR only occupies downstream bandwidth. Normal streaming varies between 64kbps (kilo-bits-per-second) to 128kbps as this provides a good sound quality. Some customers even stream at 18kbps AAC+! So a normal 100Mbit network can serve almost 550 SIR Internet radios with a stream of 128kbps taking into account that you normally only use 70% of available capacity. The bottleneck is mostly the Internet connection. If available bandwidth is limited (e.g. 256/128) it is obvious that the store & forward mode might be the best mode to use as it only uses bandwidth when it is available. The local SD memory card can be filled with music and commercials during the night or during the weekend or any other moment that the network load is very small. You only have to exchange some tracks and send a new playlist. The SIR will operate stand-alone during the periods it should not access the network. With a Job Schedule the SIR knows exactly what to do (play, stop, download tracks, change channel, upgrade firmware, etc.) on any moment. The SD memory card can hold enough content to let it play for weeks. This should answer the last objections of your network people. OK. But what about Security.? What is my risk? First of all, we want to stick to the rules set by the IT people. Apart from that we think the risk is absolutely minimal if any at all! For this reason 2008, Streamit BV W: T: E: info@streamit.eu p. 9/10

10 the SIRs are very flexible in the configuration: Dynamic (DHCP) or Static IP addresses, both will do. Do you have a Proxy server 4 in place? The SIR can be instructed to use it. You can use a special Internet gateway and separate the SIR network traffic from other activity via VLAN patching. In case your company has its own Private Network or Virtual Private Network (VPN) the Streamit ADP can be installed as a dedicated server in your own data center. Via a secure VPN connection with your music provider this server is updated. All other traffic takes place inside your own secured network without outside connections. The SIR operating system does not run a web server, so nobody can approach it remotely. The SIR operates on a pull basis: it asks for new instructions by itself and only accepts a pre defined set of instructions. It does not accept remote instructions. Streamit ADP requires authentication. The Streamit ADP server runs on Linux. Of course it is protected by a login procedure for SIRS and for users. In our opinion there are no risks in using the Streamit solutions if you have your normal network security up and running. Note from the editor: Streaming audio over data networks is not new, but we are discovering new applications on a regular basis. Maybe it is because we focus on the receiving side and not so much on the transmitting side like most companies do. This is the difference between broadcasting and narrowcasting. In broadcasting it does not matter which device your listeners use. In narrowcasting it makes all the difference! For this reason we are keen on learning from your requirements and ideas. Let us know at info@streamit.eu. It will further improve our solutions and the narrowcasting experience of many listeners. 4 A proxy server is a server that operates as a middle man and services the requests of its clients (PCs or SIRs) by forwarding requests to other servers. The clients i.e. never have a direct access to the Internet. 2008, Streamit BV W: T: E: info@streamit.eu p. 10/10